Autosomal (Diaspora)

Links to Articles

• Unravelling the hidden ancestry of American admixed populations (Montinaro et al., 2015)
• Genome-wide ancestry of 17th-century enslaved Africans from the Caribbean (Schroeder et al., 2015)
• Reconstructing the Population Genetic History of the Caribbean (Moreno-Estrada et al., 2013)
• Genetic Consequences of the Transatlantic Slave Trade in the Americas (Micheletti et al., 2020)

 

Links to Blog Posts

• Specifying the African Origins of the Afro Diasporan Genome (part 1) (2015)
• Specifying the African Origins of the Afro Diasporan Genome (part 2) (2015)
• African origins of Hispanic Caribbeans according to DNA studies (2015)
• African breakdown for other parts of the Afro-Diaspora (2021)

Charts, graphs, tables etc.

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Own calculations based on “Unravelling the hidden ancestry of American admixed populations” (Montinaro et al., 2015)

 

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Unravelling the hidden ancestry of American admixed populations (Montinaro et al., 2015)

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Genome-wide ancestry of 17th-century enslaved Africans from the Caribbean (Schroeder et al., 2015)

 

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Genome-wide ancestry of 17th-century enslaved Africans from the Caribbean (Schroeder et al., 2015)

 

 

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Genome-wide ancestry of 17th-century enslaved Africans from the Caribbean (Schroeder et al., 2015)

 

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Genome-wide ancestry of 17th-century enslaved Africans from the Caribbean (Schroeder et al., 2015, Supplement)

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Reconstructing the Population Genetic History of the Caribbean (Moreno-Estrada et al., 2013)

 

***(PUR=Puerto Rican sample)

Reconstructing the Population Genetic History of the Caribbean (Moreno-Estrada et al., 2013)

 

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Source: Micheletti et al. (2020). The labeling for “Coastal West African” and “Congolese” is reflecting the initial names for categories which are now shown as resp. “Ghanaian, Liberian & Sierra Leonean” and “Angolan & Congolese” on 23andme. Obviously the focus on only 4 categories represents a rather basic regional framework, but still the outcomes are conforming with historical expectations, for the most part. Take note how “Senegambian” is clearly peaking for Cape Verdeans. Also being in primary place for various Hispanic American populations. “Coastal West African” is widespread but only most significant for Guyana/Suriname as well as the Bahamas. “Congolese” as biggest component is restricted to just Brazil, Argentina and Uruguay. “Nigerian” is mostly prevailing for the USA and the British/French Caribbean. Again quite widespread but certainly not a default outcome when taking into account the entire Afro-Diapora!

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This overview is showing the scaled African breakdown for all the Afro-descended sample groups featured in Micheletti et al. (2020). My own calculation, based on the study’s supplement mmc3/Table S7. Practically all these nationalities have also been covered by my own 23andme survey, albeit with much smaller sample size. Still in almost all cases highly consistent with my own research findings. Compare also with this overview.

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